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Normal Occupant Weight
This means 68 kilograms (150 lbs. ) time the number of occupants specified in the second column of Table 1
of 49 CFR 571.110.
Occupant Distribution
The distribution of occupants in a vehicle as specified in the third column of Table 1 of 49 CFR 571.110.
Open Splice
Any parting of any junction of tread, sidewall, or innerliner that extends to cord material
Outer Diameter
The overall diameter of an inflated new tire
Overall Width
The linear distance between the exteriors of the sidewalls of an inflated tire, including elevations due to label-
ing, decorations, or protective bands or ribs
Ply
A layer of rubber-coated parallel cords
Ply Separation
A parting of rubber compound between adjacent plies
Pneumatic Tire
A mechanical device made of rubber, chemicals, fabric and steel or other materials, that when mounted on an
automotive wheel, provides the traction and contains the gas or fluid that sustains the load.
Production Options Weight
The combined weight of those installed regular production options weighing over 2.3 Kilograms (5lbs.) in
excess of those standard items which they replace, not previously considered in curb weight or accessory
weight, including heavy duty brakes, ride levelers, roof rack, heavy duty battery, and special trim.
Radial Ply Tire
A pneumatic tire in which the ply cords that extend to the beads are laid at substantially 90 degrees to the
centerline of the tread
Recommended Inflation Pressure
This is the inflation pressure provided by the vehicle manufacture on the Tire Information Label and on the
Certification/VIN tag.
Reinforced Tire
A tire designed to operate at higher loads and at higher inflation pressures than the corresponding standard
tire.
Rim
A metal support for a tire or a tire and tube assembly upon which the tire beads are seated
Rim Diameter
This means the rim diameter and width
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